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Method for improving random access procedure in wireless communications system and related communication device

一种随机存取、通讯装置的技术，应用在同步装置、无线通信、电气元件等方向，能够解决客户端缺少提前时序信息、无法成功接收探测参考符号信道质量指示、提前时序无法更新等问题

Inactive Publication Date: 2010-06-09
HTC CORP
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AI Technical Summary

Problems solved by technology

However, since TimingAdvance Information is transmitted through the random access response, it indicates that the client lacks the timing advance information, so that the timing advance cannot be updated to an accurate value, and the base station cannot successfully receive the information in the above two cases. Sounding reference symbols and channel quality indication

Method used

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  • Method for improving random access procedure in wireless communications system and related communication device
  • Method for improving random access procedure in wireless communications system and related communication device
  • Method for improving random access procedure in wireless communications system and related communication device

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Embodiment Construction

[0050] Please refer to Figure 5 , Figure 5 It is a schematic diagram of a wireless communication system 50 . The wireless communication system 50 is preferably a Long Term Evolution (LTE) system, which is simply composed of a network terminal and multiple mobile devices. exist Figure 5 In , the network end and the client end are used to illustrate the architecture of the wireless communication system 50 . Preferably, the wireless communication system 50 is a long-term evolution wireless access network, which may include multiple base stations according to actual needs), and the mobile device can be regarded as a client, which can be a mobile phone, a computer system and other devices. In addition, according to the transmission direction, the network and the client can be regarded as a transmitter and a receiver. For example, for an uplink transmission, the client is the transmitter and the network is the receiver; for a downlink transmission, the network is the transmit...

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Abstract

A method for improving a random access procedure for a mobile device of a wireless communication system is disclosed. The method includes initiating the random access procedure, starting a time alignment timer of the mobile device when receiving a time alignment message transmitted by a base station of the wireless communication system, and controlling the random access procedure according to expiry of the time alignment timer, wherein the time alignment timer of the mobile device is used for determining a synchronization state between the mobile device and the base station and the time alignment message is utilized by the base station to update a timing advance for the mobile device.

Description

technical field [0001] The present invention relates to a method used in a wireless communication system and its related communication device, in particular to a method used in a wireless communication system to improve the random access procedure of a time calibration timer and its related communication device. Background technique [0002] The Long Term Evolution (LTE) wireless communication system formulated by the 3rd Generation Partnership Project (3GPP) is currently considered to provide high data transmission rate, low latency, and packet optimization And a new wireless interface and wireless network architecture to improve system capacity and coverage. In the LTE wireless communication system, the Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio AccessNetwork, E-UTRAN) includes multiple evolved radio base stations (evolved Node-Bs, eNBs), and multiple clients (user equipment, UE) for communication. [0003] The radio interface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00
CPCH04W74/0833H04W74/008H04W56/0045H04W74/002
Inventor 吴志祥
Owner HTC CORP
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